Scientific American, June 2009

Improbable Planets
Astronomers are finding abundant planets around stars that are not much bigger than planets themselves.

The Price of Silent Mutations
Small changes to DNA
sequences that seemingly should not affect the proteins encoded by
genes are proving to be remarkably important in human diseases,
evolution and biotechnology.

Phosphorus: A Looming Crisis
This underappreciated
element could become one of the key sustainability issues of our time.
Even as excesses of phosphorus in agricultural runoff cause dangerous
algal blooms, global reserves of it are depleting rapidly.

The Taming of the Cat
Genetic and archaeological
findings hint that wildcats became the first house cats earlier -- and
elsewhere -- than previously
thought.

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